@article{JEMS_2006_8_4_a1,
     author = {Valentino Magnani},
     title = {Characteristic points, rectifiability and perimeter measure on stratified groups},
     journal = {Journal of the European Mathematical Society},
     pages = {585--609},
     publisher = {mathdoc},
     volume = {8},
     number = {4},
     year = {2006},
     doi = {10.4171/jems/68},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/68/}
}